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Old 2018-03-15, 12:19   #7
JeppeSN
 
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"Jeppe"
Jan 2016
Denmark

25·5 Posts
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Quote:
Originally Posted by Dr Sardonicus View Post
I would say 2 (a = b = 1).
I should have said I was interested in odd primes only (and the number 1 is not prime).

Therefore a and b cannot both be odd. And as said by science_man_88 above, additionally a and b must be coprime.

These comments imply that a and b are distinct. Without loss of generality, a > b > 0.

/JeppeSN
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